Class 9 Mathematics

NCERT14 h of video

8 chapters · 86 topics

What Class 9 Mathematics covers

One thing each chapter sets out to make you able to do, in the order the book teaches them.

State what a coordinate system must supply before any position can be named: two perpendicular reference directions, an origin, a unit, and signed numbersCh 1Orienting Yourself: The Use of Coordinates
Build an expression from a described situation by naming the quantities that vary and writing the arithmetic that combines themCh 2Introduction to Linear Polynomials
Explain how pairing one token to one object decides whether a collection is complete, without either quantity being counted or namedCh 3The World of Numbers
Carry out the chapter's opening trick on three sets of three consecutive square numbers and report that the outcome is 2 each timeCh 4Exploring Algebraic Identities
State the defining condition of a circle in terms of a fixed point and a fixed distance, and say which of the two is the centre and which the radiusCh 5I’m Up and Down, and Round and Round
State what a perimeter is as a distance travelled around a border, and apply that description to a figure with no formula attached to itCh 6Measuring Space: Perimeter and Area
State what probability measures, and name the three physical quantities the chapter uses as its analogyCh 7The Mathematics of Maybe: Introduction to Probability
State what makes a list a sequence, and identify the first, second and fifth term of a given sequenceCh 8Predicting What Comes Next: Exploring Sequences and Progressions

Sentences students actually say, one from each chapter, taken from the notes the videos were made from.